Draft-rigging for railway-cars.



J. F. O'CONNOR" DRAFT RIGGING FOR RAILWAY CARS.

APPLICATIDNHLED APR. 9.1917.

1,24s,534.- Pz xtented Dec. 4,1917.

to ticu arly hereinafter described,

UNITED STATES PATENT oFFIcE.

ml r. eemies; or cmcaco, rumors, assrc'non 'ro wxnmarr n. airma b;-

H ZY, NEW, roan. 4, p

onus-Brooms m RAILWAY-CABS.

10 drawings, forming a part of this specification.

This invention relates to improvements in draft gears for railways cars.

One pbjectof the invention is to provide a friction draft gear for railway cars wherein are employed frusto-conical friction springs ,cooperable with correspondingly formed friction shells and an ordinary coil spring to thereby produce a large amount of friction upon relative approach of ,the followers between which the gear proper is mounted.

Another object of theinvention is to pr0- vide afriction gear employing'a frusto-conical friction spring in combination with other elements arranged as to produce friction between the layers of the spring itself, between the'spring and'an exterior member and an additional-lineal resistance of said springas an entirety.

. In the drawing for-mingle, part of this specification, Fi re 1 is a orizontal longitudinal section of a portion of a draft rlgging showin my improvements in connec tlon therewit the parts being indicated in normal or full release osition. Fig. 2 is a view correspondin to ig. 1 but illustrating ,the position of t e- "And Fig. 3 is a vertlcal transverse section,

401 taken on the line 3-3 of Fig. 1. p In said drawing, 10- 10 denote channel-- shaped center sills to the inneffaces of which are secured rear stops 11 and front stops 12. Cooperable with said stops is a 46 rear follower 13 and front-follower 14, the

followersand the gear therebetween being connected to the draw bar 15 by a 'yoke 16.

The r proper, as shown, comprises a -.1on 'tu inally-slidable testing A more parfrusto-conical springs B -B at each end thereof, inner spring followers CO,a 'lon 'tudinal coil spring D, friction blocks E- and a retainin cbolt F.

' 5 5 s e casting A. isprovided at each end Specification" of Letters ratent. Application filed April 9, 1m. se'n r'm). 100,041.

thereof with a conical mouth 17 whichtapers tate of- .At the inner, ends of qo p mouths 17, the casting Am i v and it will be understood that the 0 lowers movements back and forth by, the upper and the edges of onelplate on one side and th edges of the next adjacent plate diarhetn ,callyopposite, sothat all the,plat'es' overla against the followers O- -G and inorder tolower C'C, as shown "in Fig. 1. 1

parts under full buffi.

Patented Decal,

inwa'rdly'toward the center of the casting and said castingis of such a length a'sto pe mlt the full desired movement of the vided with interior shoulders 18'-'18 against wlnch the followers C-C 'normall bee.

(1-0. :are supported and. guided in their lower walls 19-49 of the casting Each frustoconical spring B consists of a: plurality of spring plates 20 '-20,-tl(elatter be= ing each bent to conform to the surface of a frnsto-cone with clearance as indicated at 2121.between-theedges of each plateto' thcreby pcrmit'thelatter to collapse inqthe operation of the gear, as willvbe understood The plates'are preferably arranged' as 'i dicated most-clearly inFig'. '3, that is,=-wit each other and insure proper cont action of collapse of all the plates as thelatter are" pressed inwardly. The inner ends of the frusto-conipal springs BB normally bear nsure'the springs BB being maintained 1n proper position or fully expanded, the

friction blocks E-E are seated therewithin,

as clearly indicated in Figs. 1 and 2. The

coil spring D is interposed between the-fol- 1 With' he parts in the position shown in Fig. 1 wherein the outer'ends of the sprin BB are normally extended beyond fi corresponding adjacent ends ofthecasting Aiyrelative approachingmovement between 9'6 the followers 13 and 14 will force the f-rustoconical springs B-B inwardly. During this action, it is apparent that friction 1s created between the springs B-B and the casting A on their exterior and between the springs BB and the friction blocks E-E on their interior. In addition to the foregoing generated friction, additional friction is produced between the plates pomposin the springs 106 B-B as the latter contrae while beingforced into the conical mouths -1717.-; To

still further augment the resistance and increase the capacit of the gear, the sprm 'B-B force the ollo'wers inwa 110;

manner,,as by the sa -said" shell and spring D. or draft pres- D will conse- BB outwardly spring dampeners a inst the resistance of the coil Ifii on'removal of the bufing sure on the followers, the coil sp separate the followers (1-0 quently force the spring and the latter will act as during this release action, generated between the relatively sliding coils of each frusto-conical spring B. The entire gearmay be susgorted in any suitable le plate 22, which is detachably connected to the lower flanges of the sills.

Iclaimr 1. In a device of the character described,

the combination with a, friction shell havin a conical friction surface,- of a frusto-conica compressible friction member 'coiiperable therewith,. and springs interposed between said member for resisting relative movement therebetween.

2 In 'a-device offthe character the combination with a friction shell having an interiorconical friction surface, of a frusto-conical hollow compressible friction member'coo erable therewith on its exterior, a friction bibck disposed on the interior of saidim'ember and cooperable a spring interposed between said shell and said'membe'r'for resisting. relative movement therebetween. v

3 fIn shock absorbing mechanism, the combination with a castins having a, conical friction islirfacelzat each? end thereof, of a usto-conical "eompr'essiblefriction member movement between said due to the friction .mou

' with each of said described,

therewith, and

coiiperable with each of said surfaces, and a spring interposed between the inner ends of Said members to thereby resist relative cast' t 4. n shock absorbing mechanism, the combination with a casting having-a conical shapedmouth at each chamber located intermediately of said tbs, of a spring mounted within said chamber, a frusto onical compressible friction member disposed within andcoiiperable a friction block W1 I- 5. In shock absorbing 1nccl1anism,the

' combination with a-casting having a conical shaped mouth at each end thereof forminga friction shell, said casting having a chamber intermediate said months, of a. spring located within said chamber, followers at the ends ofsaid spring; frusto-conical s rings disposed in each of said mouths, saidconical springs-having their outer ends eX- tended normallv beyond the ends of the cast-' ing and their inner ends bearing a ains t' the corresponding adjacent spri'n fol ower,

and a friction block disposed wi-t in each of said frusto-conical springs.

In witness that I have hereunto subscribed my name t twentieth day of March, 1917.

JOHN F. OCONNOR.

end thereof with a mouths onits exterior, disposed on the interior 0' each of sald members and coiipei'able tl1e1 'e-- rustomembers, and said claim theforegoinfifI 1s 

